Pixel Patch

What is it for?

• Manually fixing only part of a generated result
• Keeping manual corrections visible in the graph instead of hidden state
• Toggling the same patch or applying it to another image

Overview

Layers a hand-drawn correction difference (patch) over a generated result. Corrections remain independent data containing only changed pixels, so they survive upstream generation edits and can be toggled or reused on another image.

Usage tips

• The node excels at combining procedural generation with manual cleanup. Connect noise_generate or a similar source to pixel_patch, then fix only a few pixels with the pen. The correction remains at the same coordinates when upstream parameters change.
• Route the patch output through patch_toggle / patch_merge to toggle or gather corrections with wiring.
• Large redraws are outside this node's scope; make those changes in the source asset.

Related nodes

• patch_apply / patch_toggle / patch_merge — apply and control patches
• image_manual_diff — turns an external correction into a patch
• pixel_cleanup — mechanical cleanup; choose between manual and automatic methods

Patch editor

Open the dedicated editor with the "Edit Patch" button in the Inspector.

• Pen: writes difference pixels
• Eraser: places a difference that makes the coordinate transparent
• Color: chooses the drawing color
• Grid: toggles the grid display
• Zoom: changes magnification
• Clear All: resets the current patch to empty

Notes

• The image input is for preview. The patch itself flows independently from the patch output.
• The current patch editor edits only the patch. It cannot yet overlay the image input inside the editor.
• The node works without a connected image. In that case, the image output draws only the patch on a transparent canvas.
• The patch target dimensions come from width / height. They must match the source image dimensions at PatchApply.

Examples

1. Noise Generate -> Pixel Patch -> Preview
   • Manually fix only part of an automatically generated image.
2. Pixel Patch.patch -> PatchToggle -> PatchApply
   • Compare with and without the manual correction while retaining it.
3. Pixel Patch.patch -> PatchMerge
   • Manage several manual correction patches together.